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Home ‣ Electrical Engineering ‣ RC Circuits See What Others Are Saying!
  • Question

  • When the frequency of the voltage applied to a series RC circuit is increased, the phase angle


  • Options
  • A. increases
  • B. decreases
  • C. remains the same
  • D. becomes erratic

  • Correct Answer
  • decreases 

    • More questions

    • 1. What is the voltage drop across R3?


    • Options
    • A. 112 mV
    • B. 11.25 V
    • C. 180 mV
    • D. 1.80 V
      • Discuss
    • 2. The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 Ω load. The turns ratio is 3:1. What is the secondary voltage?

    • Options
    • A. 2 V
    • B. 20 V
    • C. 180 V
    • D. 18 V
      • Discuss
    • 3. The winding resistance of a coil can be increased by

    • Options
    • A. increasing the number of turns
    • B. using a thinner wire
    • C. changing the core material
    • D. increasing the number of turns or using thinner wire
      • Discuss
    • 4. If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is

    • Options
    • A. 4 V
    • B. 18.8 V
    • C. 26.6 V
    • D. 2.66 V
      • Discuss
    • 5. When a 1.6 kΩ resistor and a 120 Ω resistor are connected in parallel, the total resistance is

    • Options
    • A. greater than 1.6 kΩ
    • B. greater than 120 Ω but less than 1.6 kΩ
    • C. less than 120 Ω but greater than 100 Ω
    • D. less than 100 Ω
      • Discuss
    • 6. Apparent power is expressed in watts.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Five time constants are required for a capacitor to charge fully or discharge fully.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Energy equals power multiplied by time.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The mesh current method is based on Kirchhoff's current law.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. XL and XC have opposing effects in an RLC circuit.

    • Options
    • A. True
    • B. False
      • Discuss

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